@ Induane: It's not a secret Ati cares more about uses of "real" videocards than about integrated ones. Your best bet for linux videocards of course is Nvidia.
@ Zorbels: It's /repaintlabels, the other one doesn't exist. If that doesn't work, you can also use "/repaintlabels force", which doesn't just repaint the labels, but completely recreates them.